It’s been a while since we’ve seen any sectioned cartridges on the the Forum, so here are two for the price of one.
Left is a M198 Duplex, hs FA 65. It is loaded with two 84 grain bullets. Right is an XM256 E1 Low Recoil, hs FA 66. It is loaded with the top bullet only.
Though these two are from the mid-1960s, the concept of two or more bullets in one case is an old one, going back to the earliest cartridges. The U.S. tested multiplex cartridges, extensively, during PROJECT SALVO in the 1950s and what was determined then to be a not-so-good idea was still a not-so-good idea in the 60s. But using your tax dollars, our government is still at it, as we speak, and the idea just won’t die.